I had a bullmastiff that I adopted from the animal shelter where I work. He was awesome at weight pulling. He absolutely loved it. He was so much fun to pull. I have put 2 titles on my rottweiler (stubborn but wonderful) and the bullmastiff was so much fun to work. He was blind in 1 eye and partially deaf. The IWPA newsletter did an article on him once. I came home from work one day to find him dead. My vet said it was a heartattack. I was just devastated. I have only been to 2 pulls this season. My heart wasn't in it. I miss him so much. But, back to your?, I have seen 2 bullies pull. Both were really good and seemed to enjoy it. Good luck, Beth